Choose the option which best expresses the meaning of the bold idiom/phrase in the sentence.
Despite several warnings from his advisors, the CEO stuck to his guns and refused to alter the company’s strategy.

The idiom "stuck to his guns" means to maintain one's opinion or decision firmly, even when faced with criticism or opposition.Option 1 ("To surrender under pressure and change one's stance") is the opposite of the idiom’s meaning.Option 2 ("To act impulsively without careful thought") does not fit the context, as the phrase implies determination rather than recklessness.Option 3 ("To rely on others for making important decisions") is unrelated to the meaning of the idiom.Thus, Option 4 is the best choice as it accurately conveys the meaning of the idiom.